Current Issue:
When performing an export on a web I get the following error:
STSADM.EXE : An item with the same key has already been added.
I have tried checking in and checking out the file. But soon after I read changing the ID even will not help so I did not continue with this. Also, I get this error on 4 seperate sibling subwebs that I attempt. How can I fix this issue?
Overall Goal
I am trying to move a 200+gb web (and subs) from one site collection to another. This web includes around 30 subwebs at various levels. Some which are Publishing some which are not. I did not use Backup/Import because I read you cannot do it when a site collection is >15gb. Please note that although I am trying to take a web, it is at level 2 so I am not opposed to copying the entire site collection. I hope to use powershell/visual studio/MS tools. If there is a db level solution that works as well.
Please help!